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Diadromous Least Concern 🌡️ Subtropical

Timucu

Strongylura timucu Walbaum, 1792
Max Length
61 cm
Max Weight
-
Lifespan
-
Trophic Level
4.5
Depth
1–3 m
Climate
Subtropical
Resilience
High
Vulnerability
29.00/100
Typical Length
35 cm
Depth Zone
reef

📖 Overview

Adults found on reef flats, in lagoons, or in freshwater . Juveniles found among floating algae . Feeds mainly on small fishes . Oviparous . Eggs may be found attached to objects in the water by tendrils on the egg's surface . During the day preys on small fishes and shrimps close to water surface, approaching potential prey stealthily within lunging range, but when disturbed, may leap and skitter at the surface. At night, young individuals rest close to the surface, aligned with semi-submersed leaves of marsh grass in mangroves, and when disturbed, usually sinks slowly and hides within vegetation. The resemblance to grass blades and its night-time behavior are believed to be defensive adaptations against nocturnal visually oriented predators like night herons .

Scientific Name
Strongylura timucu
Authority
Walbaum, 1792
Habitat
Diadromous
Climate
Subtropical
Body Shape
Elongated
IUCN Status
LC
Max Length
61 cm
Depth Range
1–3 m
Trophic Level
4.5
Resilience
High
Vulnerability
29.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 15 - 17; Anal soft rays: 16 - 20. Caudal peduncle without a lateral keel, the least depth about equal to the width; maxilla exposed posteriorly; opercles scaled.: elongated.

🌀 Behaviour

Behavioural data for Timucu is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Marine; freshwater; brackish; reef-associated; depth range 1 - 3 m . Subtropical

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish 🪸 Reef Associated
Trophic Level
4.5±0.8
🌙 Nocturnal
Food Items

small fishes (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00162 × L3.1 (TL)
Max TL
61cm
Dorsal Rays
16
Anal Rays
18

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
4.5
Apex / Top predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Walbaum, 1792

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